Door-lock attachment.



un. 705,236. IPatented my 22, |902. A. HATFILL & G. B. LEE. nous n ocxATTACHMENT.

(Applpation'led. Sept. 20, 1901.)

(#0 Model.)

`Uivrrnu Srnrns ANDREW T. HATFILL AND-GEORGE B. LEE, OF DEOORAH, IDAHO.

DOOR-LOCK ATTACHVI ENT.

SPECIFICATION formingpart of Letters Patent No. 705,236, dated July 22,19102.

Application filed September 20, 1901. Serial No. 75,662. (No model.)

To all whom, t may concern,.-

Be it known that we, ANDREW T. HATFILL and GEORGE B. LEE, citizens ofthe United States, residing at Decorah, in the county of Vashington,State of Idaho, have invented certain new and usefullmprovements inDoor- Lock Attachments and We do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to door-locks 5 and it has for its object toprovide an attachment therefor whereby when the door-knob is operated ineither direction to open the door a bell will be rung.

A further object of the invention is to provide a simple and cheapconstruction wherein by a simple adjustment the knob-spindle will bepermitted to turn freely of the lock mechanism to soundthe bell a numberof times without operating the look mechanism.

Other objects and advantages of the invention willl be understood fromthe following description.

In the drawings forming a portion of this speciiioation, and in whichlike numerals of reference indicate similar parts in the several views,Figure 1 is an edge view of a door equipped with the present invention.Fig. 2 is a vertical transverse section through the bell, theknob-spindle, and the lock mechanism. Fig. 3 is a section on line 3 3 ofFig. 1, the gong being indicatedin dotted lines. Fig. 11 is a transversesection through the knob carrying the striker-pins. Fig. 5 is a viewshowing the clapper in elevation with the studs or strikers, thedoor-knob spindle being in section and the positions of the belland itssupport being indicated in dotted lines.

Referring now to the drawings, the lock mechanism includes the usualyoke 5, which carries the locking-bolt G, the ends of the arms of theyoke being alternately engaged by the tumbler or rocker? to retract' theyoke against the tendency of the springvS. Through the rocker is formedan opening 9, through which is'passed the knob-spindle 10, the centralportion of which is rounder to permit of free turning in the opening. Ina wall of the opening 9 is formed a seat or recess 11, which is disposedfor engagement by a key or feather 12, which is slidably mounted in aguideway formed in the spindle and in the inside knob 13, the featherbeing held normally and yieldably engaged with the recess or seat bymeans of the helical spring 11, which encircles the feather and bears atone end against a stop on the feather and at the opposite end againstthe knob. Thus normally the feather is engaged with the recess to lockthe spindle to the rocker, so that the lock will be opened when eitherknob 13 and l-is operated.

Then the feather is drawn outwardly, however, the spindle turns freelyin the rocker, and the lock is not operated. To facilitate outwarddrawing of the feather, a ring 16 is engaged with its outer end, andwhen the feather is drawn outwardly this ring may be folded inwardly tolie against the side of the feather and to rest against the end of theknob to hold the feather withdrawn, so that the lock cannot be operatedby rotation of either knob. Y

On the inside of the door 17 to which the mechanism is secured ismounted a gong 18 on an arch-shaped support 19, carried by a plate 20,which also carries a stud 21. A spring-plate 22 is engaged at one end inthis stud, which is beneath the gong and at the opposite side from theknob 13,and the springplate, which has its edge outwardly, is takenthrough the arch and outwardly from under the opposite edge of the gongand is passed through a slotted stud 2d adjacent to the gong, the freeend of the plate being disposed in the path of movement of a series ofstuds or strikers 25, mounted upon a disk 26 on the knob 13. Attached tothe spring-plate at a point beneath the gong and extending at both sidesthereof is a transverse clapper-bar 2S, having heads29, so that when thefree end ofthe spring-plate is moved laterally ineither direction it isbowed at the point of attachnient of the clapper-bar to carry one headaway from the gong, and when the plate is released the plate in itsrecovery throws this head against the gong to vibrate it. `Vheu thefeather is in engaged position, the knobspindle has only such a degreeof rotation as will cause one of the striker-pins to engage first oneside and then the other of the free end of the plate to bow it first oneway and then the other as the spindle is oscillated.

IOC

Thus in whichever direction the spindle is turned to open the lock thepin will engage, bow, and pass beyond the end of the springplate tosound the gong. When the feather is withdrawn from active position, thespindle turns idly and the striker-pins successively engage the free endof the spring-plate and cause the gong-to sound a number of times foreach rotation of the spindle corresponding to the number of pins andwithout opening the lock.

It will be understood that in the oscillation of the spindle rst onestriker-head or clapper-head and then the other will engage the gong;but when the spindle is continuousl y rotated the same head successivelystrikes the gong.

In practice modifications of the construction shown may be made, and anysuitable materials and proportions may bensed for the various partswithout departing from the spirit of the invention.

What is claimed is;

1. The combination with a lock mechanism and a knob-spindle foroperative connection therewith, of means for throwing the spindle intoand out of operative relation to the lock mechanism, a striker carriedby the spindle, a gong, a spring-plate lprojecting at one end into thepath of the striker and fixed at its opposite end, and a clapper carriedby the spring-plate, the gong being disposed for engagement by theclapper when the springplate is released by the striker.

2. The combination with a lock mechanism including a rocker, of aknob-spindle passed through the rocker, a feather carried by the spindlefor engagement with the rocker to lock the latter thereto,` means forholding the feather yieldably engaged with the rocker, means for holdingthe feather in disengaged position, a striker carried by the spindle,and a bellhaving a clapper disposed for operation by the striker.

3. The combination with a lock mechanism and a knob-spindle foroperating it, of a striker carried by the spindle, a gong, aspring-plate fixed at one end and extending with its other end beneaththe gong and into the path of the striker for operation thereby, stopsat opposite sides ofthe spring-plate between the point of attachment ofthe end of the plate and the striker, and a clapper attached to theplate at a point between the stops and the attached end of the plate.

4. The combination with a lock mechanism including a spindle of meansfor throwing the spindle into and ont of operative relation to themechanism, a gong, a spring-plate attached at one end beneath the gongand projecting with its opposite free end therefrom, strikers carried bythe spindle for engagement with the free end of the plate, stops atopposite sides of the plate at a point between its ends, and clapperscarried by the plate at a point between the stops and the attached endof the plate for engagement with the gong.

In testimony whereof we affix our signatures in presence of twowitnesses.

\ ANDREW T. HATFILL. v GEORGE B. LEE. Witnesses:

M. W. STRoUsE, E. O. I-Inssn.

